Sleeping disorder findings Food 'made from air' could compete with soya 用空气做成的食物价格可与大豆价格竞争 Episode 200127 / 27 Jan 2020 Creating food ‘from thin air’ Europe's Cheops telescope launched to study ...

Iceland has no shortage of natural dangers – volcanic eruptions, glacial floods, scaldingly hot springs and bitterly cold winters. But it is at least one of the few places on Earth where humans don't ...

1846年的夏天，夏洛蒂带我去曼彻斯特看眼科大夫。我们住在镇上的房子里，大夫决定给我的眼睛做手术，第二天我们起得很早。我有点害怕。当医生用刀切到我的眼睛时，我的头能保持不动吗?也许会疼得很厉害。也许我会动，会站起来，或是…… ...